CloudLinux is a hosting-oriented Linux distributive based on CentOS. It uses the LVE (Lightweight virtual environment) kernel technology that is similar to OpenVZ in some aspects or to other OS-based virtualization technologies.
In shared hosting, the most common downtime reason is a single account grabbing most of the shared resources due to the heavy site(-s) or unoptimized script(-s). CloudLinux OS is designed especially for servers being used in this way, making the situation where one or several users cause severe load or even hang up the server impossible.
CloudLinux improves the server stability by encapsulating each client in a secure, isolated environment. It means that each user on the server is limited by the number of resources it can use, being placed in a so-called 'container' (separated operating environment).
The benefits of CloudLinux:
- Isolates the users from each other to avoid neighbour effect
- Prevents users from seeing configuration files or any other private information
- Allows monitoring and controlling limits, such as CPU, RAM and I/O usage
- Monitors and operates MySQL usage
- Provides CageFS file system that uniquely encapsulates each customer
- Allows end users to select PHP versions 5.2-5.6
- Prevents symbolic links attacks
- Compatible with all major control panels